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Commit 361e9b07 authored by Stephen M. Cameron's avatar Stephen M. Cameron Committed by Jens Axboe
Browse files

cciss: Handle cases when cciss_add_disk fails. 



Handle cases when cciss_add_disk fails.

Signed-off-by: default avatarStephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent e8074f79

drivers/block/cciss.c

+25 −10
Original line number Diff line number Diff line
@@ -200,6 +200,7 @@ static int scan_thread(void *data); 
static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c);

static void cciss_hba_release(struct device *dev);

static void cciss_device_release(struct device *dev);

static void cciss_free_gendisk(ctlr_info_t *h, int drv_index);



#ifdef CONFIG_PROC_FS

static void cciss_procinit(int i);
@@ -1856,8 +1857,14 @@ static void cciss_update_drive_info(int ctlr, int drv_index, int first_time) 
	 * (raid_leve == -1) then we want to update the

	 * logical drive's information.

	 */

	if (drv_index || first_time)

		cciss_add_disk(h, disk, drv_index);

	if (drv_index || first_time) {

		if (cciss_add_disk(h, disk, drv_index) != 0) {

			cciss_free_gendisk(h, drv_index);

			printk(KERN_WARNING "cciss:%d could not update "

				"disk %d\n", h->ctlr, drv_index);

			--h->num_luns;

		}

	}



freeret:

	kfree(inq_buff);
@@ -1891,6 +1898,12 @@ static int cciss_find_free_drive_index(int ctlr, int controller_node) 
	return -1;

}



static void cciss_free_gendisk(ctlr_info_t *h, int drv_index)

{

	put_disk(h->gendisk[drv_index]);

	h->gendisk[drv_index] = NULL;

}



/* cciss_add_gendisk finds a free hba[]->drv structure

 * and allocates a gendisk if needed, and sets the lunid

 * in the drvinfo structure.   It returns the index into
@@ -1931,8 +1944,7 @@ static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) 
	return drv_index;



err_free_disk:

	put_disk(h->gendisk[drv_index]);

	h->gendisk[drv_index] = NULL;

	cciss_free_gendisk(h, drv_index);

	return -1;

}
@@ -1950,11 +1962,8 @@ static void cciss_add_controller_node(ctlr_info_t *h) 
		return;



	drv_index = cciss_add_gendisk(h, 0, 1);

	if (drv_index == -1) {

		printk(KERN_WARNING "cciss%d: could not "

			"add disk 0.\n", h->ctlr);

		return;

	}

	if (drv_index == -1)

		goto error;

	h->drv[drv_index].block_size = 512;

	h->drv[drv_index].nr_blocks = 0;

	h->drv[drv_index].heads = 0;
@@ -1963,7 +1972,13 @@ static void cciss_add_controller_node(ctlr_info_t *h) 
	h->drv[drv_index].raid_level = -1;

	memset(h->drv[drv_index].serial_no, 0, 16);

	disk = h->gendisk[drv_index];

	cciss_add_disk(h, disk, drv_index);

	if (cciss_add_disk(h, disk, drv_index) == 0)

		return;

	cciss_free_gendisk(h, drv_index);

error:

	printk(KERN_WARNING "cciss%d: could not "

		"add disk 0.\n", h->ctlr);

	return;

}



/* This function will add and remove logical drives from the Logical